package com.pingan.pastry.adapter;

import com.google.gson.JsonSyntaxException;
import com.google.gson.TypeAdapter;
import com.google.gson.internal.JavaVersion;
import com.google.gson.internal.PreJava9DateFormatProvider;
import com.google.gson.internal.bind.util.ISO8601Utils;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonToken;
import com.google.gson.stream.JsonWriter;

import java.io.IOException;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.ParsePosition;
import java.util.*;

public class DateTypeAdapter extends TypeAdapter<Date> {

    private final List<DateFormat> dateFormats = new ArrayList();


    public DateTypeAdapter() {
        this.dateFormats.add(DateFormat.getDateTimeInstance(2, 2, Locale.US));
        if (!Locale.getDefault().equals(Locale.US)) {
            this.dateFormats.add(DateFormat.getDateTimeInstance(2, 2));
        }

        if (JavaVersion.isJava9OrLater()) {
            this.dateFormats.add(PreJava9DateFormatProvider.getUSDateTimeFormat(2, 2));
        }
    }

    @Override
    public void write(JsonWriter out, Date value) throws IOException {
        if (value == null) {
            out.nullValue();
        } else {
            String dateFormatAsString = ((DateFormat) this.dateFormats.get(0)).format(value);
            out.value(dateFormatAsString);
        }
    }

    @Override
    public Date read(JsonReader in) throws IOException {
        if (in.peek() == JsonToken.NULL) {
            in.nextNull();
            return null;
        } else {
            try {
                long value = in.nextLong();
                return new Date(value);
            } catch (NumberFormatException e) {
                //todo
            }
            return this.deserializeToDate(in.nextString());
        }
    }

    private synchronized Date deserializeToDate(String json) {
        Iterator var2 = this.dateFormats.iterator();

        while (var2.hasNext()) {
            DateFormat dateFormat = (DateFormat) var2.next();

            try {
                return dateFormat.parse(json);
            } catch (ParseException var6) {

            }
        }

        try {
            return ISO8601Utils.parse(json, new ParsePosition(0));
        } catch (ParseException var5) {
            throw new JsonSyntaxException(json, var5);
        }
    }
}
